bookatrainer.dk

Records from scan: 2026-10-09 14:15:12 · 908ms total · last checked 2026-10-17 02:43 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

bookatrainer.dk is a .dk domain served by 2 nameservers (isabel.ns.cloudflare.com, jacob.ns.cloudflare.com). It was registered on 3 September 2023 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.75.200 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx1.dandomain.dk, mx2.dandomain.dk. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 41ms

Nameserver	IP addresses	PTR	ASN / ISP
isabel.ns.cloudflare.com	108.162.194.104 162.159.38.104 172.64.34.104 2606:4700:50::a29f:2668 2803:f800:50::6ca2:c268 2a06:98c1:50::ac40:2268	isabel.ns.cloudflare.com isabel.ns.cloudflare.com isabel.ns.cloudflare.com isabel.ns.cloudflare.com isabel.ns.cloudflare.com isabel.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
jacob.ns.cloudflare.com	108.162.195.162 162.159.44.162 172.64.35.162 2606:4700:58::a29f:2ca2 2803:f800:50::6ca2:c3a2 2a06:98c1:50::ac40:23a2	jacob.ns.cloudflare.com jacob.ns.cloudflare.com jacob.ns.cloudflare.com jacob.ns.cloudflare.com jacob.ns.cloudflare.com jacob.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 38ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.75.200	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.181.83	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

2 records 40ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mx1.dandomain.dk	212.237.249.50	mx1.dandomain.dk	AS48854 team.blue Denmark A/S
20	300s	mx2.dandomain.dk	46.36.209.11	mx2.dandomain.dk	AS48854 team.blue Denmark A/S

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover-mf.dandomain.dk → 212.237.249.98
🔶 Autoconfig	autoconfig-mf.dandomain.dk → 212.237.249.54

🔷 AAAA Records (IPv6)#

2 records 40ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::ac43:b553	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::6815:4bc8	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 39ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.75.200,172.67.181.83 ech=AEX+DQBBmwAgACB4CPAGGobwgEgU6RAfmbNJOfCuZ0xumGwEYVHIPBqWLAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::ac43:b553,2606:4700:3035::6815:4bc8

📝 TXT Records#

1 records 183ms

TXT Record
v=spf1 include:spf.dandomain.dk -all

✉️ SPF#

Policy	Record (bookatrainer.dk)
-all (hard fail)	v=spf1 include:spf.dandomain.dk -all

📨 DMARC#

Policy	Record (_dmarc.bookatrainer.dk)
p=none (monitor only)	v=DMARC1; p=none;

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

checked 2026-10-09 14:15:12

www	104.21.75.200 172.67.181.83 2606:4700:3031::ac43:b553 2606:4700:3035::6815:4bc8 (AS13335) (address records, no CNAME)
www vs bare domain	Same network bookatrainer.dk: 104.21.75.200 172.67.181.83 2606:4700:3031::ac43:b553 2606:4700:3035::6815:4bc8 (AS13335) www.bookatrainer.dk: 104.21.75.200 172.67.181.83 2606:4700:3031::ac43:b553 2606:4700:3035::6815:4bc8 (AS13335)
Wildcard	No

✍️ DKIM keys#

2 found

Selector	CNAME	Key
s1	s1.domainkey.u37065159.wl160.sendgrid.net	RSA · ~2048 bit
s2	s2.domainkey.u37065159.wl160.sendgrid.net	RSA · ~2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 3/10 · policy: -all

No problems found

🔗 TLSA / DANE#

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC#

126ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

29ms

Field	Value
Serial	2416452237
Primary NS (MNAME)	isabel.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-14 18:31:06

Field	Value
Registrar	DANDOMAIN A/S
Registered	2023-09-03
Expires	2027-09-02 (319d)

🔗 Same registrant#

0 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

No other domain with this registrant in our WHOIS data yet

📋 WHOIS#

⏱️ Lookup Timing#

41ms

38ms

40ms

AAAA

40ms

TXT

183ms

CAA

43ms

HTTPS

39ms

TLSA

100ms

SOA

29ms

MTA-STS

65ms

DNSSEC

126ms

SRV

61ms

Total

908ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 14:15:12 shown	908ms	2 NS 2 A 2 MX	🔓 Insecure
2026-10-03 08:35:05	4485ms	2 NS 2 A 2 MX	🔓 Insecure
2026-09-27 07:31:21	580ms	2 NS 2 A 2 MX	🔓 Insecure
2026-09-21 17:38:38	655ms	2 NS 2 A 2 MX	🔓 Insecure
2026-09-19 10:22:10	1550ms	2 NS 2 A 2 MX	🔓 Insecure
2026-09-09 03:20:00	2852ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-25 11:16:15	648ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-07 11:30:12	17254ms	2 NS 2 A 2 MX	❓ Unknown
2026-07-19 03:49:03	10204ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-26 04:33:19	1790ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-23 18:44:51	852ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-20 07:34:00	1064ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-16 15:55:54	470ms	2 NS 2 A 2 MX	🔓 Insecure